%0 Journal Article
%T Microstructure and Tensile Properties of ZK60 Alloy Fabricated by Simplified Rapid Solidification Powder Metallurgy (S-RS P/M) Process<br>
%A Zhenya Zhang
%A Huashun Yu
%A Shaoqing Wang
%A Haitao Wang
%A Guanghui Min Key Laboratory of Liquid Structure
%A Heredity of Materials
%A Ministry of Education
%A Sh
%A ong University
%A Jinan
%A China
%A <br>
%J 材料科学技术学报
%D 2010
%I 
%X This study investigated the microstructures and mechanical properties of ZK60 alloy prepared by a simplified rapid solidification powder metallurgy (RS P/M) processing system (S-RS P/M), which consists of warm press in dry air and hot extrusion. Microstructure characterizations showed that S-RS P/M alloy consisted of magnesium matrix and oxide stringers of ~1 μm in width. TEM (transmission electron microscopy) observations illustrated nano-size magnesia particles (10{30 nm) constituted oxide stringer in detail. Due to a relatively higher volume of nano-size magnesia particle produced during S-RS P/M process, 0.2% yield strength of S-RS P/M ZK60 alloy was found to be as high as 382 MPa, which is 10% higher than that of RS P/M alloy. The improvement in mechanical properties is mainly attributed to the combination effects of Orowan mechanism and coe±cient of thermal expansion (CTE) mismatch because of the approximately same average grain size.
%K Microstructure
%K Mechanical properties
%K Rapid solidification powder metallurgy
%K Nano-size magnesia<br>
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=84529CA2B2E519AC&jid=324DC3CAB22330DB19158AE0A9B7BFA5&aid=C5199E7587AADE5027D3F5B070672B27&yid=140ECF96957D60B2&vid=96C778EE049EE47D&iid=0B39A22176CE99FB&sid=70AC2EF7F2065E09&eid=7CE3F1F20DE6B307&journal_id=1005-0302&journal_name=材料科学技术学报&referenced_num=0&reference_num=14